NEC NC900C-A User Manual - Page 82
Input Connector, tasks, such as lamp cooling and switching title.
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6. Appendix Input Connector GP I/O Connector Ext_GPIN_P Pin No.: 1 2 3 4 5 6 7 8 Voltage applied across the pins of Ext_GPIN_P and Ext_GPIN_N should be in the range from 3.3 Vdc to 10 Vdc. Recommended Operating Current: 5mA Absolute Maximum Rating: 23mA Ext_GPIN_N Pin No.: 20 21 23 23 24 25 26 27 Inside Projector Resist = 390 Ω Photo-coupler Forward direction voltage: 1.1V (@5mA) • Using GPIO Control Momentary "ON" pulse enables you to control projector. To enable "ON" pulse, hold it for at least 500 ms. Hold "OFF" for at least 500 ms before "ON". (See page 83) Here is function list to control projector by using GPIO port. Pin No. Photo-coupler ON/OFF Function 1-20 ON/OFF 3D L/R timing signal input ON/OFF 2-21 ON/OFF 3D L/R display timing signal input ON/OFF 3-22 - System reserved (used internally) 4-23 - System reserved (used internally) 5-24 6-25 7-26 8-27 8-27 OFF OFF 7-26 OFF OFF 6-25 OFF ON 5-24 ON OFF The following functions apply depending on the combination of input terminals. Power ON Power OFF OFF OFF ON ON Lamp ON OFF ON OFF OFF Lamp OFF OFF ON OFF ON Image douser ON OFF ON ON OFF Image douser OFF OFF ON ON ON System reserved (used internally) ON OFF OFF OFF Selects the title registered to the preset button 1 ON OFF OFF ON Selects the title registered to the preset button 2 ON OFF ON OFF Selects the title registered to the preset button 3 ON OFF ON ON Selects the title registered to the preset button 4 ON ON OFF OFF Selects the title registered to the preset button 5 ON ON OFF ON Selects the title registered to the preset button 6 ON ON ON OFF Selects the title registered to the preset button 7 ON ON ON ON Selects the title registered to the preset button 8 Example for dousing image: Input ON to 5-24 and 7-26 while 6-25 and 8-27 are OFF. Example for selecting the preset button 2: Input ON to 5-24 and 8-27 while 6-25 and 7-26 are OFF. NOTE • The operation command coming from GPI/O port will be canceled when the projector is processing other tasks, such as lamp cooling and switching title. • Set all other pins than those in use to "OFF". • The operation command is executed upon continuous input of the "ON" pulse for approximately 200 ms. 82